Homework 4 (due Tuesday, February 18)

• 13.2: 4-5, 9-10, 15-16, 18, 24, 49-50, 55, 57.
   
• 13.3: 17-18, 22, 42-43 (a dot means a derivative; two dots means two derivatives), 48, 50 (just the osculating plane), 61(a)-(b). (Here dB/ds is just the derivative with respect to time.)